82271320 has 32 divisors (see below), whose sum is σ = 186454800. Its totient is φ = 32669568.

The previous prime is 82271281. The next prime is 82271339. The reversal of 82271320 is 2317228.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1839 + ... + 12958.

Almost surely, 2^82271320 is an apocalyptic number.

It is an amenable number.

82271320 is an abundant number, since it is smaller than the sum of its proper divisors (104183480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82271320 is a wasteful number, since it uses less digits than its factorization.

82271320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14947 (or 14943 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 82271320 is about 9070.3539070976. The cubic root of 82271320 is about 434.9267855818.

Adding to 82271320 its reverse (2317228), we get a palindrome (84588548).

The spelling of 82271320 in words is "eighty-two million, two hundred seventy-one thousand, three hundred twenty".